US9040933B2 - Controlling electromagnetic radiation in a data center - Google Patents
Controlling electromagnetic radiation in a data center Download PDFInfo
- Publication number
- US9040933B2 US9040933B2 US14/203,104 US201414203104A US9040933B2 US 9040933 B2 US9040933 B2 US 9040933B2 US 201414203104 A US201414203104 A US 201414203104A US 9040933 B2 US9040933 B2 US 9040933B2
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- section
- radiation
- data center
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- computer
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F7/00—Shielded cells or rooms
- G21F7/06—Structural combination with remotely-controlled apparatus, e.g. with manipulators
- G21F7/061—Integrated manipulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/007—Details of, or arrangements associated with, antennas specially adapted for indoor communication
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/147—Reflecting surfaces; Equivalent structures provided with means for controlling or monitoring the shape of the reflecting surface
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/148—Reflecting surfaces; Equivalent structures with means for varying the reflecting properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/007—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with means for controlling the absorption
Definitions
- the field of the invention is data processing, or, more specifically, methods, apparatus, and products for controlling electromagnetic radiation in a data center.
- EM electromagnetic
- Controlling EM radiation in a data center in accordance with embodiments of the present invention includes: receiving, by an EM controller, a specification of preferred EM radiation characteristics for the data center and setting, by the EM controller, a state of each EM section in accordance with the specification, wherein the state of each EM section comprises one of: an absorption state in which the EM section absorbs EM radiation or a reflection state in which the EM section reflects EM radiation.
- FIG. 1 sets forth a network diagram of an exemplary data center in which EM radiation is controlled according to embodiments of the present invention.
- FIG. 2 sets forth a line drawing of an exemplary data center in which EM radiation is controlled in accordance with embodiments of the present invention.
- FIG. 3 sets forth a flow chart illustrating an exemplary method for controlling EM radiation in a data center according to embodiments of the present invention.
- FIG. 4 sets forth a flow chart illustrating a further exemplary method of controlling EM radiation in a data center according to embodiments of the present invention.
- FIG. 1 sets forth a network diagram of an exemplary data center in which EM radiation is controlled according to embodiments of the present invention.
- a data center is a facility used to house mission critical computer systems and associated components. Such a data center may include environmental controls (air conditioning, fire suppression, etc.), redundant or backup power supplies, redundant data communications connections, and high security, highlighted by biometric access controls to compartmentalized security zones within the facility.
- a data center may also house a large amount of electronic equipment, typically computers and communications equipment.
- a data center may be maintained by an organization for the purpose of handling the data necessary for its operations.
- a bank for example, may have a data center, where all bank customers' account information is maintained and transactions involving these accounts are carried out. Practically every company that is mid-sized or larger has some kind of data center with the larger companies often having dozens of data centers.
- the data center ( 120 ) of FIG. 1 includes a plurality of EM sections ( 102 ), an EM controller ( 152 ), and a number of servers ( 182 ).
- An EM section is a device, which may be installed in a data center and operates to either absorb EM radiation or reflect EM radiation.
- EM sections may be implemented in various ways, including, for purposes of explanation only, as a sheet of conductive metal. Such sheets of conductive metal may be installed in ceilings, walls, and floors of the data center in a grid (or other) pattern. In data centers having a raised floor, EM sections may be installed underneath the floor upon which people may walk.
- Each EM section ( 102 ) in the example data center ( 120 ) of FIG. 1 is configurable. That is, each EM section may be set to one of two states: an absorption state in which the EM section absorbs EM radiation or a reflection state in which the EM section reflects EM radiation.
- the EM controller ( 152 ) in the example of FIG. 1 is automated computing machinery—a computer—that operates generally for controlling EM radiation in a data center in accordance with embodiments of the present invention.
- the EM controller ( 152 ) of FIG. 1 includes at least one computer processor ( 156 ) or ‘CPU’ as well as random access memory ( 168 ) (‘RAM’) which is connected through a high speed memory bus ( 166 ) and bus adapter ( 158 ) to processor ( 156 ) and to other components of the EM controller ( 152 ).
- each EM section Stored in RAM ( 168 ) is an EM control application ( 126 ), a module of computer program instructions that, when executed by the processor ( 156 ) of the EM controller ( 152 ) causes the EM controller to: receive a specification ( 128 ) of preferred EM radiation characteristics for the data center and set a state of each EM section in accordance with the specification.
- each EM section may be set to one of two states: an absorption state in which the EM section absorbs EM radiation or a reflection state in which the EM section reflects EM radiation.
- An EM controller may receive the preferred characteristics in various ways, including for example, by receiving the characteristics directly from a system administrator or other user, by receiving the characteristics in directly from an application specifying locations of wireless communicators, or in other ways as will occur to readers of skill in the art.
- Such preferences may specify explicitly those EM sections ( 102 ) to set to a particular state, or instead, may specify an objective EM path from which the EM controller may identify EM sections to set a particular state.
- the EM control may effectively tune the data center for wireless data communications among devices—servers ( 182 ) for example—in the data center.
- the EM controller is coupled for data communications to the EM sections ( 102 ) in the example of FIG. 1 through an EM control network ( 100 ).
- the EM control network ( 100 ) may be implemented in myriad ways: as an Ethernet network with switches and hubs, as a point-to-point network, as an I 2 C network, with a multiplexor capable of coupling a single EM section to the EM controller for communications, or in other ways as will occur to readers of skill in the art.
- RAM ( 168 ) Also stored in RAM ( 168 ) is an operating system ( 154 ).
- Operating systems useful for controlling EM radiation in a data center include UNIXTM LinuxTM Microsoft XPTM AIXTM IBM's i5/OSTM and others as will occur to those of skill in the art.
- the operating system ( 154 ), EM control application ( 126 ), and the specification of preferred EM characteristics ( 128 ) in the example of FIG. 1 are shown in RAM ( 168 ), but many components of such software typically are stored in non-volatile memory also, such as, for example, on a disk drive ( 170 ).
- the EM controller ( 152 ) of FIG. 1 includes disk drive adapter ( 172 ) coupled through expansion bus ( 160 ) and bus adapter ( 158 ) to processor ( 156 ) and other components of the EM controller ( 152 ).
- Disk drive adapter ( 172 ) connects non-volatile data storage to the EM controller ( 152 ) in the form of disk drive ( 170 ).
- Disk drive adapters useful in EM controllers that control EM radiation in a data center include Integrated Drive Electronics (‘IDE’) adapters, Small Computer System Interface (‘SCSI’) adapters, and others as will occur to those of skill in the art.
- IDE Integrated Drive Electronics
- SCSI Small Computer System Interface
- Non-volatile computer memory also may be implemented for as an optical disk drive, electrically erasable programmable read-only memory (so-called ‘EEPROM’ or ‘Flash’ memory), RAM drives, and so on, as will occur to those of skill in the art.
- EEPROM electrically erasable programmable read-only memory
- Flash RAM drives
- the example EM controller ( 152 ) of FIG. 1 includes one or more input/output (‘I/O’) adapters ( 178 ).
- I/O adapters implement user-oriented input/output through, for example, software drivers and computer hardware for controlling output to display devices such as computer display screens, as well as user input from user input devices ( 181 ) such as keyboards and mice.
- the example EM controller ( 152 ) of FIG. 1 includes a video adapter ( 209 ), which is an example of an I/O adapter specially designed for graphic output to a display device ( 180 ) such as a display screen or computer monitor.
- Video adapter ( 209 ) is connected to processor ( 156 ) through a high speed video bus ( 164 ), bus adapter ( 158 ), and the front side bus ( 162 ), which is also a high speed bus.
- the exemplary EM controller ( 152 ) of FIG. 1 includes a communications adapter ( 167 ) for data communications with other computers—servers ( 182 )—and for data communications with a local data communications network ( 101 ).
- a communications adapter for data communications with other computers—servers ( 182 )—and for data communications with a local data communications network ( 101 ).
- Such data communications may be carried out serially through RS-232 connections, through external buses such as a Universal Serial Bus (‘USB’), through data communications networks such as IP data communications networks, and in other ways as will occur to those of skill in the art.
- Communications adapters implement the hardware level of data communications through which one computer sends data communications to another computer, directly or through a data communications network.
- Examples of communications adapters useful in EM controllers that control EM radiation according to embodiments of the present invention include modems for wired dial-up communications, Ethernet (IEEE 802.3) adapters for wired data communications network communications, and 802.11 adapters for wireless data communications network communications.
- Data processing systems useful according to various embodiments of the present invention may include additional servers, routers, other devices, and peer-to-peer architectures, not shown in FIG. 1 , as will occur to those of skill in the art.
- Networks in such data processing systems may support many data communications protocols, including for example TCP (Transmission Control Protocol), IP (Internet Protocol), HTTP (HyperText Transfer Protocol), WAP (Wireless Access Protocol), HDTP (Handheld Device Transport Protocol), and others as will occur to those of skill in the art.
- Various embodiments of the present invention may be implemented on a variety of hardware platforms in addition to those illustrated in FIG. 1 .
- FIG. 2 sets forth a line drawing of an exemplary data center in which EM radiation is controlled in accordance with embodiments of the present invention.
- the example data center ( 120 ) of FIG. 2 includes a plurality of EM sections ( 102 ).
- EM sections ( 102 ) have been installed in two walls ( 204 , 206 ), a ceiling ( 202 ), and a floor ( 206 ).
- an EM controller (not shown here, but similar to the EM controller ( 120 ) on FIG.
- the EM controller may set the row of EM sections ( 102 ) installed in the wall ( 204 ) and nearest the floor ( 208 ) to a reflective state while setting the remaining two rows of EM sections ( 102 ) installed in the wall ( 204 ) to an absorption state. Readers of skill in the art will recognize that there may be many different configurations of EM sections installed in a data center and such EM sections may be set to absorb or reflect EM radiations in various ways. Each such configuration and way is well within the scope of the present invention.
- FIG. 3 sets forth a flow chart illustrating an exemplary method for controlling EM radiation in a data center according to embodiments of the present invention.
- the data center includes a plurality of EM sections.
- the method of claim 3 includes receiving ( 302 ), by an EM controller ( 152 ), a specification ( 304 ) of preferred EM radiation characteristics for the data center.
- a specification ( 304 ) of preferred EM radiation characteristics may be implemented in various ways including for example, as a message from a administration module configured to administer computing devices in the data center, as a data structure received in response to user input specifying the preferred characteristics, and in other ways as will occur to readers of skill in the art.
- the method of FIG. 3 also includes setting ( 306 ), by the EM controller, a state of each EM section in accordance with the specification.
- he state of each EM section may be set ( 306 ) to one of: an absorption state in which the EM section absorbs EM radiation or a reflection state in which the EM section reflects EM radiation.
- each EM section ( 318 , 320 ) is implemented as an electrically conductive metal and setting ( 306 ) a state of each EM section ( 318 , 320 ), is carried out by setting ( 308 ) at least one EM section to reflect EM radiation ( 312 ) including electrically decoupling ( 314 ) the EM section to a ground reference voltage; and setting ( 320 ) at least one other EM section to absorb EM radiation ( 312 ) including electrically coupling ( 316 ) the EM section to a ground reference voltage.
- FIG. 4 sets forth a flow chart illustrating a further exemplary method of controlling EM radiation in a data center according to embodiments of the present invention, where the data center includes a plurality of
- the method of FIG. 4 is similar to the method of FIG. 3 in that the method of FIG. 4 includes receiving ( 302 ) a specification ( 304 ) of preferred EM radiation characteristics for the data center and setting ( 306 ) a state of each EM section in accordance with the specification.
- the method of FIG. 4 differs from the method of FIG. 3 , however, in that, the method of FIG. 4 includes, repositioning ( 402 ) an EM section ( 418 , 420 ) set in the reflection state including controlling a direction of EM radiation ( 412 , 414 ) reflected by the EM section. Repositioning ( 402 ) an EM section set in the reflection state.
- repositioning ( 402 ) an EM section set in the reflection state.
- three EM sections ( 412 , 422 , and 414 ) installed in a ceiling of a data center are set forth for purposes of explanation.
- EM section ( 418 ) and EM section ( 420 ) are repositioned to control direction of reflection of EM radiation ( 412 ) and EM radiation ( 414 ) respectively, while EM section ( 422 ) remains in its original position.
- EM sections may be repositioned ( 402 ) in various ways, including, for example by use of one or more motors, such as a stepper motor, coupled to a central axis point of the EM section. In this way, an EM section may be rotated about the section point at a multitude of different angles and the EM section's position may be precisely set.
- Exemplary embodiments of the present invention are described largely in the context of a fully functional computer system for controlling EM radiation in a data center. Readers of skill in the art will recognize, however, that the present invention also may be embodied in a computer program product disposed upon computer readable media for use with any suitable data processing system.
- Such computer readable media may be any storage medium for machine-readable information, including magnetic media, optical media, or other suitable media. Examples of such media include magnetic disks in hard drives or diskettes, compact disks for optical drives, magnetic tape, and others as will occur to those of skill in the art.
- Persons skilled in the art will immediately recognize that any computer system having suitable programming means will be capable of executing the steps of the method of the invention as embodied in a computer program product. Persons skilled in the art will recognize also that, although some of the exemplary embodiments described in this specification are oriented to software installed and executing on computer hardware, nevertheless, alternative embodiments implemented as firmware or as hardware are well within the scope of the present invention.
- aspects of the present invention may be embodied as a system, method or computer program product. Accordingly, aspects of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a “circuit,” “module” or “system.” Furthermore, aspects of the present invention may take the form of a computer program product embodied in one or more computer readable medium(s) having computer readable program code embodied thereon.
- the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
- a computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
- a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
- a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof.
- a computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
- Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
- Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the “C” programming language or similar programming languages.
- the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.
- the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider).
- LAN local area network
- WAN wide area network
- Internet Service Provider for example, AT&T, MCI, Sprint, EarthLink, MSN, GTE, etc.
- These computer program instructions may also be stored in a computer readable medium that can direct a computer, other programmable data processing apparatus, or other devices to function in a particular manner, such that the instructions stored in the computer readable medium produce an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
- the computer program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.
- each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s).
- the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
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US14/203,104 US9040933B2 (en) | 2010-11-18 | 2014-03-10 | Controlling electromagnetic radiation in a data center |
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US12/948,851 US8717030B2 (en) | 2010-11-18 | 2010-11-18 | Controlling electromagnetic radiation in a data center |
US14/203,104 US9040933B2 (en) | 2010-11-18 | 2014-03-10 | Controlling electromagnetic radiation in a data center |
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US12/948,851 Division US8717030B2 (en) | 2010-11-18 | 2010-11-18 | Controlling electromagnetic radiation in a data center |
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US20140191141A1 US20140191141A1 (en) | 2014-07-10 |
US9040933B2 true US9040933B2 (en) | 2015-05-26 |
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US14/203,104 Expired - Fee Related US9040933B2 (en) | 2010-11-18 | 2014-03-10 | Controlling electromagnetic radiation in a data center |
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US13/486,219 Active 2030-12-27 US8717031B2 (en) | 2010-11-18 | 2012-06-01 | Controlling electromagnetic radiation in a data center |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20230034312A1 (en) * | 2021-07-30 | 2023-02-02 | JaXon Engineering and Maintenance LLC | Remotely Controlled, Automated Shielding Effectiveness Test System for High-Altitude Electromagnetic Pulse Detection |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120073783A1 (en) * | 2010-09-27 | 2012-03-29 | Degree Controls, Inc. | Heat exchanger for data center |
US8717030B2 (en) | 2010-11-18 | 2014-05-06 | International Business Machines Corporation | Controlling electromagnetic radiation in a data center |
FR3018638B1 (en) * | 2014-03-14 | 2017-07-07 | Centre Nat D'etudes Spatiales (Cnes) | MULTI-SECTOR ABSORPTION DEVICE AND METHOD |
US10234492B2 (en) | 2016-08-31 | 2019-03-19 | Ca, Inc. | Data center monitoring based on electromagnetic wave detection |
US11251537B2 (en) * | 2020-06-04 | 2022-02-15 | Nec Corporation | Reconfigurable intelligent surface-based systems and methods for managing multiple wired connections in wireless data centers |
US11706908B2 (en) * | 2020-12-22 | 2023-07-18 | Raytheon Company | Programmable wire filaments and devices |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4948922A (en) | 1988-09-15 | 1990-08-14 | The Pennsylvania State University | Electromagnetic shielding and absorptive materials |
JP2000059068A (en) | 1998-08-06 | 2000-02-25 | Oji Kako Kk | Transparent radio wave absorbing body and manufacture thereof |
JP2000332484A (en) | 1999-03-15 | 2000-11-30 | Sankyo Numazu Kk | Electromagnetic wave shielding member |
JP2001339191A (en) | 2000-05-30 | 2001-12-07 | Toppan Printing Co Ltd | Radio wave absorbent having frequency selectivity |
JP2001339192A (en) | 2000-05-30 | 2001-12-07 | Toppan Printing Co Ltd | Radio wave shielding body and electromagnetic wave shielding room using the same |
US20030038745A1 (en) | 2001-08-24 | 2003-02-27 | Farzin Lalezari | Antenna apparatus including compound curve antenna structure and feed array |
US6559903B2 (en) | 1991-11-27 | 2003-05-06 | Reveo, Inc. | Non-absorptive electro-optical glazing structure employing composite infrared reflective polarizing filter |
JP2003234593A (en) | 2002-02-06 | 2003-08-22 | Mitsubishi Cable Ind Ltd | Radio wave absorber |
JP2004363159A (en) | 2003-06-02 | 2004-12-24 | Fujita Corp | Electromagnetic wave absorptive panel |
JP2004363138A (en) | 2003-06-02 | 2004-12-24 | Toppan Printing Co Ltd | Wave absorber/reflector |
JP2005079247A (en) | 2003-08-29 | 2005-03-24 | Toppan Printing Co Ltd | Electric wave absorber |
JP2005158851A (en) | 2003-11-21 | 2005-06-16 | Kyodo Kizai Kk | Frequency-selective electromagnetic wave shielding film |
JP2005183772A (en) | 2003-12-22 | 2005-07-07 | Toppan Printing Co Ltd | Radio wave absorber |
US20070063907A1 (en) | 2005-09-16 | 2007-03-22 | Nec Corporation | Wireless communication system and method |
US20120126149A1 (en) | 2010-11-18 | 2012-05-24 | International Business Machines Corporation | Controlling Electromagnetic Radiation In A Data Center |
US20130281800A1 (en) * | 2007-09-05 | 2013-10-24 | Sensible Medical Innovations Ltd. | Method, system and apparatus for using electromagnetic radiation for monitoring a tissue of a user |
-
2010
- 2010-11-18 US US12/948,851 patent/US8717030B2/en active Active
-
2012
- 2012-06-01 US US13/486,219 patent/US8717031B2/en active Active
-
2014
- 2014-03-10 US US14/203,104 patent/US9040933B2/en not_active Expired - Fee Related
Patent Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4948922A (en) | 1988-09-15 | 1990-08-14 | The Pennsylvania State University | Electromagnetic shielding and absorptive materials |
US4948922B1 (en) | 1988-09-15 | 1992-11-03 | Pennsylvania Research Organiza | |
US6559903B2 (en) | 1991-11-27 | 2003-05-06 | Reveo, Inc. | Non-absorptive electro-optical glazing structure employing composite infrared reflective polarizing filter |
JP2000059068A (en) | 1998-08-06 | 2000-02-25 | Oji Kako Kk | Transparent radio wave absorbing body and manufacture thereof |
JP2000332484A (en) | 1999-03-15 | 2000-11-30 | Sankyo Numazu Kk | Electromagnetic wave shielding member |
JP2001339191A (en) | 2000-05-30 | 2001-12-07 | Toppan Printing Co Ltd | Radio wave absorbent having frequency selectivity |
JP2001339192A (en) | 2000-05-30 | 2001-12-07 | Toppan Printing Co Ltd | Radio wave shielding body and electromagnetic wave shielding room using the same |
US20030038745A1 (en) | 2001-08-24 | 2003-02-27 | Farzin Lalezari | Antenna apparatus including compound curve antenna structure and feed array |
JP2003234593A (en) | 2002-02-06 | 2003-08-22 | Mitsubishi Cable Ind Ltd | Radio wave absorber |
JP2004363159A (en) | 2003-06-02 | 2004-12-24 | Fujita Corp | Electromagnetic wave absorptive panel |
JP2004363138A (en) | 2003-06-02 | 2004-12-24 | Toppan Printing Co Ltd | Wave absorber/reflector |
JP2005079247A (en) | 2003-08-29 | 2005-03-24 | Toppan Printing Co Ltd | Electric wave absorber |
JP2005158851A (en) | 2003-11-21 | 2005-06-16 | Kyodo Kizai Kk | Frequency-selective electromagnetic wave shielding film |
JP2005183772A (en) | 2003-12-22 | 2005-07-07 | Toppan Printing Co Ltd | Radio wave absorber |
US20070063907A1 (en) | 2005-09-16 | 2007-03-22 | Nec Corporation | Wireless communication system and method |
US20130281800A1 (en) * | 2007-09-05 | 2013-10-24 | Sensible Medical Innovations Ltd. | Method, system and apparatus for using electromagnetic radiation for monitoring a tissue of a user |
US20120126149A1 (en) | 2010-11-18 | 2012-05-24 | International Business Machines Corporation | Controlling Electromagnetic Radiation In A Data Center |
US20120235068A1 (en) | 2010-11-18 | 2012-09-20 | International Business Machines Corporation | Controlling Electromagnetic Radiation In A Data Center |
Non-Patent Citations (4)
Title |
---|
Bossard, et al., A Novel Design Methodology for Reconfigurable Frequency Selective Surfaces Using Genetic Algorithms, Antennas and Propagation, IEEE Transactions, 2001, pp. 1390-1400, vol. 53, Issue 41. |
Park, et al., Development of Electromagnetic Wave Absorbers to Improve ETC Communication Environment, Microwave Conference, Department of Radio Sciences and Engineering, Korea Maritime University, 2008, Korea. |
Parker, et al., Active Frequency Selective Surfaces With Ferroelectric Substrates, Microwaves, Antennas and Propagation, IEE Proceedings, Apr. 2001, pp. 103-108, vol. 148, Issue No. 2, University of Kent, Canterbury. |
Smith, et al., Principles and Demonstration of Multi-Functional Adaptive Electromagnetic Screen, Electronic Letters, Jun. 26, 2003, vol. 39, No. 13l. |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230034312A1 (en) * | 2021-07-30 | 2023-02-02 | JaXon Engineering and Maintenance LLC | Remotely Controlled, Automated Shielding Effectiveness Test System for High-Altitude Electromagnetic Pulse Detection |
US11782080B2 (en) * | 2021-07-30 | 2023-10-10 | JaXon Engineering and Maintenance LLC | Remotely controlled, automated shielding effectiveness test system for high-altitude electromagnetic pulse detection |
Also Published As
Publication number | Publication date |
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US20140191141A1 (en) | 2014-07-10 |
US8717031B2 (en) | 2014-05-06 |
US20120235068A1 (en) | 2012-09-20 |
US20120126149A1 (en) | 2012-05-24 |
US8717030B2 (en) | 2014-05-06 |
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